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Irwin Speedbor 7/16" Weldtec Tubed Ship Auger Bit

Brand: Irwin Mfg#: 4935570
Product#: 1734935570
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Speedbor Weldtec Nail Cutting Wood Ship Auger Bit, 0.4375 in Diameter, Wide Flute, 12 in Flute Length, 17 in Overall Length, 1 Flute, 0.4375 in Shank, Hexagonal Shank, Carbon Steel


  • Patent pending welded cutting edge
  • Wide flutes
  • SPEEDBOR with WeldTec ship auger bits are made storager and last longer because a harder cutting edge is welded to the base material
  • 2X nail cutting life compared to standard IRWIN ship augers
  • Fully forged body on bits 3/4 in diameter and larger


  • Brand: Irwin
  • Product Line: Speedbor
  • Shank Type: Hexagonal
  • Shank Size: 0.4375 in
  • Diameter: 0.4375 in
  • Flute Type: Wide
  • Overall Length: 17 in
  • Type: Nail Cutting
  • Number of Flutes: 1
  • Flute Length: 12 in
  • Material: Carbon Steel